kpix 5's kpix 5 reporter elissa harrington tells us that even -- kpix 5 reporter elissa harrington tells us that the event has been moved for the first time in decades. >>> reporter: for the first time the event won't happen at lotta's fountain. it will be at union square because of the police activity at market street where the ceremony was supposed to take place. right now i have police chief greg suhr. what is happening? >> reporter: so about 3:00 this morning, there was a suspect with a hooded sweatshirt, black hooded sweatshirt, that was seen by one of the security guards here at 3rd and marketplace a black bag with a solid object down at 701 market street. so obviously, the ceremony was to take place at lotta's fountain just about right now. our personnel cleared the area. you can see the command post behind me, they swept the 700 block of market street with a bomb dog. and then at first -- first attempt was to cut the bag open with our robot. we had a problem with the machine. and so now one of our guys is actually suiting up to see what's in the bag. >> reporter: what can you tel